CHEM Knewton Alta 3.1 Matter, Mass, and Weight

Which of the following describes the gaseous state of matter?

-it expands to fill its container -particles are far away from one another, and experience little attraction

The image below was captured over a hot mug of coffee on a cold morning. Which state(s) of matter are present in the image?

-liquid -gas The image shows steam condensing as it hits the cool air. Pure steam, which is in the gas phase, is invisible. The cloudy appearance comes from droplets of liquid water that form when the steam cools upon mixing with cold air.

Matter that will take the shape of its container, but not expand to fill it is in what phase?

liquid Liquids have a definite volume, but no definite shape. This means that they will expand to fit the shape of their container, but not expand to fill it completely.

Which physical form of matter has a definite volume, but no definite shape?

liquid Liquid is a physical form of matter that has a definite volume, but no definite shape. A solid has a definite volume and definite shape, and a gas has no definite volume or shape.

Liquids, solids, and gases are all physical states of:

matter

Compared to a gas, the molecules of a liquid:

move more slowly, and are packed closer together Molecules of a liquid do not move as rapidly, and are not as spread out as molecules of a gas. They have less kinetic energy than gas molecules.

Which physical form of matter has definite shape and volume?

solid

What physical state of matter is associated the particles having least amount of thermal energy?

solid Solids have the most rigidly packed particles (molecules, ions, or atoms) because they have the lowest amount of thermal energy compared to the other states of matter for that substance.

Which of the following states of matter can exert pressure?

solid, liquid and gas

Which of the following is a phase of matter?

solid, liquid, and gas

Which of the following substances will take the shape of a container it is placed in?

water Water is a liquid, and will take the shape of its container. Ice cubes, sand, and salt are solids. And although they might seem to take the shape of their container when small enough, when separated out, they do not.